EP0993906A1 - Schärfvorrichtung für das Schneidmesser einer Doppelstück-Webmaschine - Google Patents

Schärfvorrichtung für das Schneidmesser einer Doppelstück-Webmaschine Download PDF

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Publication number
EP0993906A1
EP0993906A1 EP99203262A EP99203262A EP0993906A1 EP 0993906 A1 EP0993906 A1 EP 0993906A1 EP 99203262 A EP99203262 A EP 99203262A EP 99203262 A EP99203262 A EP 99203262A EP 0993906 A1 EP0993906 A1 EP 0993906A1
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EP
European Patent Office
Prior art keywords
sharpening
face
cutting knife
weaving machine
reel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99203262A
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English (en)
French (fr)
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EP0993906B1 (de
Inventor
Johnny Debaes
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Individual
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Individual
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Publication date
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Publication of EP0993906B1 publication Critical patent/EP0993906B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • B24B3/368—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades installed as an accessory on another machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/004—Machines or devices using grinding or polishing belts; Accessories therefor using abrasive rolled strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/12—Means for treating work or cutting member to facilitate cutting by sharpening the cutting member
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00—Pile-fabric looms
    • D03D39/16—Double-plush looms, i.e. for weaving two pile fabrics face-to-face
    • D03D39/18—Separating the two plush layers, e.g. by cutting

Definitions

  • This invention relates to a sharpening device for the cutting knife of a face-to-face weaving machine, comprising a belt-shaped sharpening means provided with a sharpening face that is so disposable that the cutting knife during its movements comes into contact with this sharpening face, and that is movable in order to bring various areas of the sharpening face within reach of the cutting knife.
  • This invention also relates in particular to a face-to-face weaving machine provided with one or several such sharpening devices.
  • This cutting device consists of a knife carriage on to which a cutting knife is attached.
  • the knife carriage is movably disposed on a cutting bench extending according to the weft direction, and is moved back and forth on this cutting bench by means of a drive device, so that the pile warp threads are cut through by the cutting knife.
  • a known sharpening device is described in the French patent publication no. FR-2.556.638, and comprises two sharpening stones between which the cutting knife is moved at the end of the cutting bench.
  • the sharpening stones are attached on elastic holders. At each extremity of the cutting bench such a sharpening device can be disposed.
  • sharpening stone shapes there are two sharpening stone shapes in use. On the one hand there are the flat beam-shaped sharpening stones with a cambered sharpening face and on the other hand there are the round sharpening stones which have a conical sharpening face.
  • a sharpening device is described with the characteristics mentioned in the first paragraph of this specification.
  • This device comprises namely an elastically disposed round sharpening stone with a conical-shaped sharpening face, and is rotatable so that the cutting knife during rotation of the sharpening stone does not always come into contact in the same place with this sharpening stone.
  • a sharpening device with a belt-shaped endless sharpening means is described. By driving the sharpening belt in a circular movement various areas of the belt can be brought within reach of the cutting knife.
  • the sharpening pressure may not be set high.
  • the sharpening pressure must be just sufficient in order to rub the abrasive grains of the sharpening face with every passage of the cutting knife against the edge of the knife.
  • the sharpening means of the known sharpening devices often have to be cleaned. This can only occur during standstill of the weaving machine with loss of production as inevitable result.
  • the sharpening means after a certain standing time furthermore also exhibits a trace because of the fact that the abrasive grains come loose from their embedment. The sharpening surface is then no longer intact with a bad sharpening action as result. The sharpening means then has to be replaced, which again leads to a standstill of the weaving machine.
  • the purpose of this invention is to provide a sharpening device with which the disadvantages mentioned above are remedied.
  • a sharpening device with the characteristics mentioned in the first paragraph of this specification, of which the sharpening means is wound up on at least one rotatable reel, while the sharpening device is provided in order to unwind the sharpening means from this reel and wind it up on another reel in order to bring various areas of the sharpening face within reach of the cutting knife.
  • Such a sharpening means can be made with a considerable length and can be driven with simple means according to its longitudinal direction.
  • a sharpening face is provided on the weaving machine with a length (this is the dimension according to the direction of movement of the sharpening means) which is much greater than with the known round sharpening stones, where this length is limited to the circumference of the sharpening stone.
  • the sharpening belts according to the invention can be much longer, while the device can remain simple and compact. Because of this the sharpening device can operate uninterruptedly for a long time, while the cutting knife is nevertheless sharpened by an intact sharpening surface. Because of this the number of standstills of the weaving machine is reduced with an increase in productivity as result. Because of the fact that at the same time the number of manual interventions per weaving machine is reduced, this invention furthermore also results in a reduction in the maintenance costs.
  • a preferred embodiment of the sharpening device comprises a curved surface, over which the sharpening means extends, while the sharpening means can be disposed with an area of the sharpening face extending opposite this curved surface within reach of the cutting knife.
  • the sharpening means is flexible and extends over a curved surface it is brought into a corresponding curved position. Because of this a sharpening area (the area of the sharpening face which comes into contact with the cutting knife) is obtained with a very small surface area, so that the cutting knife can be sharpened with a minimum wear.
  • the curved surface is part of a spring-mounted part of the device. Because of this an optimum sharpening pressure between the sharpening face and the cutting knife can be achieved.
  • the sharpening means is connected to two rotatable reels and wound up on at least one reel, while an area of the sharpening face extending between both reels can be brought within reach of the cutting knife, and while the sharpening device comprises means for unwinding the sharpening means from one reel and winding it up on the other reel in order to bring various areas of the sharpening face within reach of the cutting knife.
  • a sharpening means with a very great length can be provided, so that a very long uninterrupted operation of the sharpening device becomes possible.
  • the replacement of a sharpening means by another sharpening means can be performed quickly. This reduces the standstill time of the weaving machine when replacing a sharpening means.
  • the sharpening means and the reels form a unit which is detachably provided on the device.
  • the sharpening means can for example be incorporated in a type of cassette which can very quickly be replaced on the sharpening device by another cassette. The situation is comparable to the replacement of an audio cassette. Because of this the duration of the weaving machine standstills for the replacement of a sharpening means is restricted to an absolute minimum.
  • Such a sharpening unit for a sharpening device is in itself also an object of this invention for which protection is claimed.
  • This detachable unit comprises two rotatable reels, and a belt-shaped sharpening means provided with a sharpening face which is wound up on at least one reel and runs from one reel to the other, while the unit can be provided on the device in an operating position whereby an area of the sharpening face is within reach of the cutting knife, and whereby the sharpening means can be unwound from one reel and can be wound up on the other reel in order to bring various areas of the sharpening face within reach of the cutting knife.
  • the sharpening means can be driven continuously or with intervals.
  • This drive can furthermore also be operated by means of a programmable control.
  • the sharpening device according to this invention furthermore preferably also comprises a tensioning device for the belt-shaped sharpening means.
  • This sharpening device can also further be provided with a cleaning device for the sharpening means.
  • a cleaning device for the sharpening means.
  • This can be a brushing device, a blowing device, a device with a cleaning fluid tank, or a combination of several of these devices.
  • the inclination and the position of the sharpening device are preferably also adjustable, so that it is possible to dispose the sharpening face quickly in an optimum position for the sharpening operation in relation to the movement path of the cutting knife.
  • This invention furthermore also relates to a face-to-face weaving machine provided with one or several sharpening devices according to this invention.
  • two sharpening devices according to this invention are disposed one above the other at an extremity of the movement path of the cutting knife.
  • the respective sharpening faces are then respectively above and below the movement path of the cutting knife.
  • a respective sharpening device or a respective set of two sharpening devices disposed one above the other can also be provided at both extremities of the movement path of the cutting knife.
  • Figure 1 represents a side elevation and a front view of an embodiment of the sharpening device, which is disposed above the cutting knife.
  • Figure 2 represents a side elevation and a front view of an embodiment of the sharpening device, which is disposed below the cutting knife.
  • Figure 3 represents a side elevation and an additional view from above of a first elastic disposition of the table of the sharpening device.
  • Figure 4 represents a side elevation and an additional view from above of a second elastic disposition of the table of the sharpening device.
  • the sharpening devices represented in the figures are disposed in the vicinity of the extremity of the cutting bench (11) of a face-to-face weaving machine.
  • a knife carriage (13) provided with a cutting knife (12) is placed on this cutting bench (11).
  • the knife carriage (13) can be moved back and forth on the cutting bench (11) by means of a drive device (not represented in the figures) so that the cutting knife (12) cuts through pile warp threads during the face-to-face weaving.
  • the sharpening device is disposed along the side of the cutting knife (12) along the cutting bench (11) on a supporting structure (14) which is connected to the chassis of the weaving machine.
  • the sharpening device comprises a base (15) which is so connected to the supporting structure (14) that this base (15) in relation to the supporting structure (14) is adjustable in horizontal and vertical direction, in the plane perpendicular to the direction of movement of the cutting knife (12).
  • the sharpening device furthermore also comprises a body (16) that is rotatably connected round a rotary shaft (17) to the base (15).
  • the inclination of this body (16) is also adjustable in relation to the base (15).
  • the body (16) bears an electric motor (1), which is provided for enabling a reel spindle (2) to rotate.
  • a first reel (3) provided on this reel spindle (2) can be driven in that manner in order to rotate and in order to wind up a sharpening belt (4) connected thereto.
  • This sharpening belt (4) runs over two capstans (5), (6) to a second rotatably disposed reel (7) which is slowed down by means of a braking system (8).
  • the sharpening belt (4) is wound up on the second reel (7), and is unwound there from by driving the first reel (3).
  • the sharpening belt (4) along the side directed towards the cutting knife (12) is provided over the entire length with a sharpening surface.
  • This sharpening surface is obtained in known manner, for example by embedding abrasive grains.
  • the base (15) of the sharpening device is so positioned and the inclination of the body (16) is so adjusted that the cutting knife (12), with every passage along the sharpening device, is slid over an area of the sharpening face on the curved surface (9).
  • the sharpening belt (4) By driving the first reel (3) the sharpening belt (4) is shifted forwards continuously or with intervals, so that the cutting knife (12) is in each case pulled over an intact sharpening surface.
  • the sharpening device can because of this operate uninterruptedly for a very long time.
  • the driving of the sharpening belt (4) by means of the electric motor (1) occurs in function of the weaving circumstances. This driving is operated by means of a programmable control device.
  • the reels (3), (7) with the sharpening belt (4) wound thereon can easily be removed from their respective reel spindles and be replaced by other reels with a new sharpening belt. Because of this invention the replacement of the sharpening means (4) has become a very simple and quick task to perform.
  • the reels (3), (7) and the sharpening belt (4) wound thereon can also be produced as a unit which is very easy to remove and replace.
  • the table (10) is provided in a U-shaped horizontal recess (21) of a support (22), while between the bottom of the recess (21) and the table (10) a spring element is provided.
  • the table (10) is disposed as in the embodiment from figure 3, but the table (10) is furthermore also hingingly connected to a shaft (23) connected to the support (22).
  • the spring-mounted disposition of the table (10) is important for achieving an optimum sharpening pressure between the cutting knife (12) and the sharpening face of the sharpening belt (4).
  • the sharpening device can also be so made that the spring pressure exerted on the table (10) is adjustable.
  • the sharpening device according to this invention can also be provided with a detection device for detecting the end or the approaching end of the sharpening belt unwound from a reel (7).
  • the cutting knife (12) can be maintained razor sharp for a long uninterrupted operation of the weaving machine by placing a sharpening device both above and below the cutting knife (12).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Looms (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
EP99203262A 1998-10-12 1999-10-06 Schärfvorrichtung für das Schneidmesser einer Doppelstück-Webmaschine Expired - Lifetime EP0993906B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9800735A BE1012230A5 (nl) 1998-10-12 1998-10-12 Slijpinrichting voor het snijmes van een dubbelstukweefmachine.
BE9800735 1998-10-12

Publications (2)

Publication Number Publication Date
EP0993906A1 true EP0993906A1 (de) 2000-04-19
EP0993906B1 EP0993906B1 (de) 2002-06-05

Family

ID=3891464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99203262A Expired - Lifetime EP0993906B1 (de) 1998-10-12 1999-10-06 Schärfvorrichtung für das Schneidmesser einer Doppelstück-Webmaschine

Country Status (6)

Country Link
US (1) US6213159B1 (de)
EP (1) EP0993906B1 (de)
JP (1) JP2000119934A (de)
BE (1) BE1012230A5 (de)
DE (1) DE69901663T2 (de)
TR (1) TR199902517A3 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1122348A1 (de) * 2000-02-04 2001-08-08 SCHÖNHERR Textilmaschinenbau GmbH Antriebsvorrichtung für den Messerschlitten einer Doppelflorwebmaschine
EP1479478A2 (de) * 2003-05-20 2004-11-24 Hauni Maschinenbau AG Verfahren zum Reinigen eines mit kubischem Bornitrid beschichteten Schleifkörpers innerhalb einer Vorrichtung zum Trennen von Tabak von einem Tabakkuchen und Vorrichtung zur Durchführung desselben
CN107354702A (zh) * 2017-06-08 2017-11-17 张宏飞 一种鞋生产用布料切割装置
CN113798932A (zh) * 2021-10-25 2021-12-17 泰州市利优精密机械有限公司 一种具有自动卸料功能的数控刀片磨床

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050245175A1 (en) * 2004-05-03 2005-11-03 David Combs In-situ blade sharpener
BE1016109A3 (nl) * 2004-07-05 2006-03-07 Wiele Michel Van De Nv Inrichting voor het ondersteunen van de snijbank in een dubbelstukweefmachine.
ATE409768T1 (de) * 2005-09-02 2008-10-15 Textilma Ag Verfahren zur herstellung eines samtbandes mit doppelseitigem flor und bandwebmaschine zur durchführung des verfahrens
CN103909447B (zh) * 2012-12-31 2016-06-29 上海和鹰机电科技股份有限公司 砂带磨刀装置
CN112008939B (zh) * 2020-08-14 2022-05-27 宜兴市优力健体育用品有限公司 一种瑜伽垫制备生产线
CN113601591B (zh) * 2020-10-23 2022-12-09 辰溪县辰河农特农业发展有限公司 一种切丁机用机芯装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2012734A1 (de) * 1968-07-11 1970-03-20 Turner Maschinen Ag
US3562801A (en) * 1968-09-11 1971-02-09 Wolf Machine Co The Belt-type blade sharpener apparatus for a cloth cutting machine
EP0437329A2 (de) * 1990-01-12 1991-07-17 Matsutani Seisakusho Co. Ltd., Chirurgische Nähnadel, Verfahren und Gerät zum Schleifen von chirurgischen Nähnadeln

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1056264B (it) * 1975-10-14 1982-01-30 Limonta M Dispositivo per il taglio di nastro di nastro di velluto su telaio ad aghi

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2012734A1 (de) * 1968-07-11 1970-03-20 Turner Maschinen Ag
US3562801A (en) * 1968-09-11 1971-02-09 Wolf Machine Co The Belt-type blade sharpener apparatus for a cloth cutting machine
EP0437329A2 (de) * 1990-01-12 1991-07-17 Matsutani Seisakusho Co. Ltd., Chirurgische Nähnadel, Verfahren und Gerät zum Schleifen von chirurgischen Nähnadeln

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1122348A1 (de) * 2000-02-04 2001-08-08 SCHÖNHERR Textilmaschinenbau GmbH Antriebsvorrichtung für den Messerschlitten einer Doppelflorwebmaschine
EP1479478A2 (de) * 2003-05-20 2004-11-24 Hauni Maschinenbau AG Verfahren zum Reinigen eines mit kubischem Bornitrid beschichteten Schleifkörpers innerhalb einer Vorrichtung zum Trennen von Tabak von einem Tabakkuchen und Vorrichtung zur Durchführung desselben
EP1479478A3 (de) * 2003-05-20 2004-12-01 Hauni Maschinenbau AG Verfahren zum Reinigen eines mit kubischem Bornitrid beschichteten Schleifkörpers innerhalb einer Vorrichtung zum Trennen von Tabak von einem Tabakkuchen und Vorrichtung zur Durchführung desselben
CN107354702A (zh) * 2017-06-08 2017-11-17 张宏飞 一种鞋生产用布料切割装置
CN113798932A (zh) * 2021-10-25 2021-12-17 泰州市利优精密机械有限公司 一种具有自动卸料功能的数控刀片磨床
CN113798932B (zh) * 2021-10-25 2024-04-02 泰州市利优精密机械有限公司 一种具有自动卸料功能的数控刀片磨床

Also Published As

Publication number Publication date
TR199902517A2 (xx) 2000-07-21
EP0993906B1 (de) 2002-06-05
BE1012230A5 (nl) 2000-07-04
US6213159B1 (en) 2001-04-10
DE69901663T2 (de) 2002-09-26
TR199902517A3 (tr) 2000-07-21
JP2000119934A (ja) 2000-04-25
DE69901663D1 (de) 2002-07-11

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